In the episode where the girls take a road trip and end up in a convent they are all eating pretzels in the car. In one scene you see Kelly and I think Val arguing back and forth. The camera cuts back and forth pretty quickly. At one point Kelly makes a comment and bites her pretzel. The camera then moves for a split second to Val who gives a one word answer, and when it comes right back, the pretzel is whole again. This all happens in one or two seconds.